277 Answered Questions for the topic astronomy

Astronomy Math

9d

#### If a planet was located approximately 27 thousand light-years from the center of a galaxy and orbits that center once every 232 million years, how fast is the planet traveling around

If a planet was located approximately 27 thousand light-years from the center of a galaxy and orbits that center once every 232 million years, how fast is the planet traveling around the galaxy in...
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Astronomy Algebra

10d

#### How long would it take to travel to an object 4.8 AU away at a constant speed of 340.0 km/hr?

#### Calculating our position in relation to the sun

Okay, I'm 63, and only went as far as precalculus in school, but that's probably enough to understand the answer. Here's my question:Imagine a line passing through the center of the sun and the...
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#### Kepler and Conservation of Energy

I need help wtih the following question:Consider the motion of a satellite with mass m around a planet with mass M (assume M>m). The orbit is elliptical.When the satellite is closest to the...
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Astronomy Science

12/06/20

#### Science about asteroids

Answer the following.1.Asteroids orbit the_____ _____ between Mars and Jupiter.2.explain what happens to a meteoroid in order for it to become a meteorite3.describe these parts of a comet: head,...
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12/03/20

#### Size of the Moon Question

Let’s say you were to do an experiment using a coin that helps to find the distance from earth to moon through measuring the distance between your eye and the moon with the coin. This will later...
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Astronomy

10/27/20

#### Pls help!! its an emergency i need help finding the answer.

In a scale model of the Solar System Earth is 1 inch in diameter. How far would you place Neptune from the Sun in the solar Scale Model? A. 895 meters B. 8.95 meters C. 8.950 kilometers

Astronomy

10/27/20

#### I need help with this question.

What astronomer was the first to make very accurate estimates of the distance from the Sun to the known planets? A. Newton B. Copernicus C. Aristotle

Astronomy

10/27/20

#### Anyone might know the answer to this question i'm having trouble with.

Which of the following can't be observed on the surface of Earth but can be viewed at high altitudes? A. x-rays B. Infrared light C. gamma rays

Astronomy

10/27/20

#### I'm having trouble with this question.

Which of the following is not a consideration when choosing a site for an observatory A. How close it is to the Equator B. Temperature C. Light Pollution

Astronomy

10/27/20

#### I need help with this question.

Which of the planets in the Solar System is the least dense? A. Saturn B. Jupiter C. Mercury

Astronomy

10/27/20

#### I need to find the correct answer for this astronomy question.

Which of these telescopes are the most compact given the same size of the objective lens or mirror?A. newtonian reflector B. Schmidt Cassegrain C. all are of equal sizes

Astronomy

10/27/20

#### I need help finding the answer to this question for astronomy.

To increase the magnification of an object through a telescope which of the following would you do or request? A. adjust the collimation of the telescope B. Get an eye piece with a shorter focal...
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Astronomy Astrophysics

09/24/20

#### Question about Gravity

J.M.JI understand that two objects pull upon each other with the same gravity, as the gravity equation gives one value for two masses: F = Gm1m2/r2 . However, it sounds absurd to say that a tennis...
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#### the escape speed

The escape speed from an object is v2 = 2GM/R, where M is the mass of the object, R is the object's starting radius, and G is the gravitational constant 6.67 × 10-11 m3 kg-1 s-2. What is the...
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#### newtons version on keplers third law

Newton’s version of Kepler’s third law is: P2 = 4 π2 / [G (M1 + M2)] × a3. The space shuttle orbits 271 km above the Earth's surface. How often do the astronauts see a sunrise (in minutes)?Use the...
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#### sam is an astronomer

Sam is an astronomer on planet Hua, which orbits the distant star Barnard. It has recently been accepted that Hua is spherical in shape, although its exact size is unknown. While studying in the...
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#### kinetic energy of moving object

The kinetic energy of a moving object is KE = 1/2 mv2, where m is the mass and v is the speed. An average apple has a mass of 0.19 kg. How fast must the apple travel in m/s to have kinetic energy...
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Astronomy Math

08/29/20

#### Suppose Halley's comet orbits the Sun every 74 years and has an eccentricity of 0.94. What is the perihelion distance of Halley’s comet in AU?

Astronomy Math

08/29/20

#### A Mercury-like planet has a semi-major axis of 0.397 AU has and an eccentricity of 0.23 What is the perihelion distance in AU?

Astronomy

08/28/20

#### If the sun was scaled down to the size of a tennis ball what is the scale factor?

Diameter of Sun: 1,390,000,000,000 cmDiameter of Tennis Ball: 6.86 cmWhat is the scale factor? Like is it 1 cm = 1 million cm etc

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